Comparison Audi A8 (D3, 4E, facelift 2005) 3.0 TDI V6 (233 Hp) quattro DPF Tiptronic & Alfa Romeo 156 (facelift 2003) 2.5 i V6 24V Q-System (192 Hp)
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| Brand: | Audi | Alfa Romeo |
| Model: | A8 | 156 |
| Generation: | A8 (D3, 4E, facelift 2005) | 156 (facelift 2003) |
| Engine / modification: | 3.0 TDI V6 (233 Hp) quattro DPF Tiptronic | 2.5 i V6 24V Q-System (192 Hp) |
| Production start: | 2005 year | 2003 year |
| Production end: | 2007 year | 2006 year |
| Coupe type: | Sedan | Sedan |
| Num. of Doors: | 4 | 4 |
| Num. of seats: | 5 | 5 |
| Fuel consumption / economy - urban: | 12.1-12.3 l/100 km | 17.5 l/100 km |
| Fuel consumption / economy - extra urban: | 6.5-6.7 l/100 km | 8.6 l/100 km |
| Fuel consumption / economy - combined: | 8.5-8.7 l/100 km | 11.9 l/100 km |
| Fuel Type: | Diesel | Petrol (Gasoline) |
| Drag coefficient: | 0.27 | |
| Fuel tank volume: | 90 l | 63 l |
| Emission standard: | Euro 4 | |
| CO2 emissions: | 229-234 g/km | |
| Power: | 233 hp | 192 hp |
| Max power in: | 4000 rpm. | 6300 rpm. |
| Maximum speed: | 243 km/h | 227 km/h |
| Acceleration from 0 to 100 km/h: | 7.8 sec | 8.5 sec |
| Torque: | 450 Nm @ 1400-3250 rpm. | 218 Nm @ 5000 rpm. |
| Model Engine: | ASB | AR 32405 |
| Engine position: | Front, longitudinal | Front, transverse |
| Engine displacement: | 2967 cm3 | 2492 cm3 |
| Engine oil capacity: | 8.2 l | 6.4 l |
| Coolant: | 15.8 l | 9.2 l |
| Fuel System: | Diesel Commonrail | Multi-point injection |
| Aspiration / Turbine: | Turbo / Intercooler (Turbocharging / Intercooler) | |
| Position of cylinders: | V engine | V engine |
| Valvetrain: | DOHC | - |
| Number of cylinders: | 6 | 6 |
| Number of valves per cylinder: | 4 | 4 |
| Compression ratio: | 17 | 10.3 |
| Piston Stroke: | 91.4 mm | 68.3 mm |
| Cylinder Bore: | 83 mm | 88 mm |
| Wheel Drive: | Front wheel drive | |
| Number of Gears (automatic transmission): | 6 Tiptronic | 4 |
| Length: | 5062 mm | 4435 mm |
| Width: | 1894 mm | 1743 mm |
| Height: | 1444 mm | 1430 mm |
| Wheelbase: | 2944 mm | 2595 mm |
| Front track: | 1629 mm | 1511 mm |
| Rear (Back) track: | 1615 mm | 1498 mm |
| Minimum volume of Luggage (trunk): | 500 l | 378 l |
| Front suspension: | Multi-link suspension | Double wishbone |
| Rear suspension: | Independent on trapezoidal lever | Double wishbone |
| Max weight: | 2430 kg | 1850 kg |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Ventilated discs | Disc |
| Kerb Weight: | 1830 kg | 1405 kg |
| ABS: | yes | yes |
| Steering type: | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Hydraulic Steering | Hydraulic Steering |
| Max. roof load: | 100 kg | |
| Permitted trailer load with brakes (8%): | 2200 kg | |
| Minimum turning circle (turning diameter): | 12.1 m | |
| Permitted trailer load with brakes (12%): | 2200 kg | |
| Permitted trailer load without brakes: | 750 kg | |
| Permitted towbar download: | 95 kg | |
| Tire size: | 235/60 R16 | 205/60 R15 |
| Wheel rims size: | 7.5J x 16 | 6.5J x 15 |